CCDM: IronList won't work if eagerServerLoad is on

[qtdzz]

Step to reproduce

1. Take skeleton-starter-flow branch ccdm
2. Add the following snippet to the MainView constructor

        IronList<String> ironList = new IronList<>();
        ironList.setHeight("100px");
        Stream<String> items = IntStream.range(0, 100)
                .mapToObj(i -> ("Item " + i));
        ironList.setItems(items);
        ironList.setId("ironlist");
        add(ironList);

3. Run the application with mvn jetty:run -Dvaadin.eagerServerLoad=true
4. Go to http://localhost:8080

Actual

Expected

Works as usual if eagerServerLoad=false

This issue also happens for other components, e.g. order-card in bakery but I didn't check what exact component causes the problem